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#ifndef SHADOW_FRAG
#define SHADOW_FRAG
float2 _MainDistanceFade;
float _ForceOpaque;
float _MainShadowClipMod;
float2 _ClippingMaskPan;
float _ClippingMaskUV;
sampler3D _DitherMaskLOD;
float2 _MainTexPan;
float _MainTextureUV;
float _Inverse_Clipping;
float _MainDistanceFadeMin;
float _MainDistanceFadeMax;
half _MainMinAlpha;
half _MainMaxAlpha;
#if defined(PROP_MAINFADETEXTURE) || !defined(OPTIMIZER_ENABLED)
POI_TEXTURE_NOSAMPLER(_MainFadeTexture);
#endif
float distanceFade()
{
#if defined(PROP_MAINFADETEXTURE) || !defined(OPTIMIZER_ENABLED)
half fadeMap = POI2D_SAMPLER_PAN(_MainFadeTexture, _MainTex, poiMesh.uv[_MainFadeTextureUV], _MainFadeTexturePan).r;
#else
half fadeMap = 1;
#endif
return lerp(_MainMinAlpha, _MainMaxAlpha, smoothstep(_MainDistanceFadeMin, _MainDistanceFadeMax, distance(poiMesh.worldPos, poiCam.worldPos)));
}
half4 fragShadowCaster(
#if !defined(V2F_SHADOW_CASTER_NOPOS_IS_EMPTY) || defined(UNITY_STANDARD_USE_SHADOW_UVS)
V2FShadow i, uint facing: SV_IsFrontFace
#endif
): SV_Target
{
poiMesh.uv[0] = i.uv;
poiMesh.uv[1] = i.uv1;
poiMesh.uv[2] = i.uv2;
poiMesh.uv[3] = i.uv3;
// Basically every texture relies on the maintex sampler to function and that's why this is here.
float4 mainTexture = UNITY_SAMPLE_TEX2D(_MainTex, TRANSFORM_TEX(poiMesh.uv[_MainTextureUV], _MainTex) + _Time.x * _MainTexPan);
//Possible Bug with clip
float clipValue = clamp(_Cutoff + _MainShadowClipMod, - .001, 1.001);
poiMesh.vertexColor = saturate(i.vertexColor);
poiMesh.worldPos = i.worldPos;
poiMesh.localPos = i.localPos;
poiCam.worldPos = _WorldSpaceCameraPos;
#ifdef POI_MIRROR
applyMirrorRenderFrag();
#endif
#if defined(UNITY_STANDARD_USE_SHADOW_UVS)
half4 alpha = mainTexture;
#if defined(PROP_MIRRORTEXTURE) || !defined(OPTIMIZER_ENABLED)
UNITY_BRANCH
if (_EnableMirrorTexture)
{
if (IsInMirror())
{
alpha.a = UNITY_SAMPLE_TEX2D_SAMPLER(_MirrorTexture, _MainTex, TRANSFORM_TEX(i.uv, _MirrorTexture)).a;
}
}
#endif
alpha.a *= distanceFade();
half alphaMask = POI2D_PAN(_ClippingMask, poiMesh.uv[_ClippingMaskUV], _ClippingMaskPan);
UNITY_BRANCH
if (_Inverse_Clipping)
{
alphaMask = 1 - alphaMask;
}
alpha.a *= alphaMask;
alpha.a *= _Color.a + .0001;
alpha.a += _AlphaMod;
alpha.a = saturate(alpha.a);
UNITY_BRANCH
if (_Mode == 0)
{
alpha.a = 1;
}
UNITY_BRANCH
if (_Mode == 1)
{
applyShadowDithering(alpha.a, calcScreenUVs(i.grabPos).xy);
}
#ifdef POI_DISSOLVE
float3 fakeEmission = 1;
calculateDissolve(alpha, fakeEmission);
#endif
UNITY_BRANCH
if (_Mode == 1)
{
clip(alpha.a - 0.001);
}
/*
return poiMesh.vertexColor.g;
#ifdef POI_RANDOM
alpha.a *= i.angleAlpha;
#endif
UNITY_BRANCH
if(_Mode >= 1)
{
applySpawnInShadow(uv[0], i.localPos);
#if defined(POI_FLIPBOOK)
alpha.a *= applyFlipbookAlphaToShadow(uv[_FlipbookTexArrayUV]);
#endif
}
*/
UNITY_BRANCH
if (_Mode == 1)
{
clip(alpha.a - clipValue);
}
UNITY_BRANCH
if (_Mode > 1)
{
float dither = tex3D(_DitherMaskLOD, float3(i.pos.xy * .25, alpha.a * 0.9375)).a;
clip(dither - 0.01);
}
#endif
SHADOW_CASTER_FRAGMENT(i)
}
#endif
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